SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
z-plan.at
SSL/TLS Certificate
SSL/TLS Certificate for z-plan.at
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- z-plan.at
- Valid from
- Jul 16, 2026
- Valid until
- Oct 14, 2026 (81 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 05CE8C037A899FB724AE3E13B439CD20F009
- SHA-256 fingerprint
- BC:98:A7:AA:96:6B:74:7A:74:66:8C:EC:3B:1F:7F:F0:15:D0:C0:49:F9:A6:11:6D:8B:8B:F3:5E:5A:EF:21:7B
- Chain
- YR2 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
This certificate has been served since Jul 24, 2026.
Never get surprised by z-plan.at's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch z-plan.at continuously, notifying you the moment anything moves across all three signals:
Uptime
We visit the site from multiple regions worldwide and email you within minutes if it goes down, with a per-region breakdown so a real outage stands out from a regional blip.
DNS changes
We watch NS, MX, CAA, DNSSEC, CNAME and A/AAAA records, and identify the host, network, and ASN behind them, so a real migration or hijack stands out from routine noise.
TLS certificate
We warn you 30, 14, 7, and 1 days before it expires, and flag it if the issuing authority changes or the certificate is unexpectedly replaced.
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